The surprising answer is: nobody knows. Physicists, despite trying for almost a century to rule it out, have so far failed. The known laws of physics do not forbid time travel. In fact, they appear to make it easy - at least in principle.

Djokovic slipped a number of times - he took a tumble, shook it off and got back up. Federer's cool demeanor is majestic - the man is almost completely unflappable... If you treat each win (and each loss) as a single step in a long journey then a stumble is temporary, a rejection an opportunity to learn and a criticism a chance to improve and tweak.

The psychoanalyst Carl Jung was the first to talk about synchronicity. He used the term to describe those times when the unlikeliest things happen together. Not just at the same time, but exactly the right time we need them to. And it's no coincidence that Einstein and Jung both believed in synchronicity.

My friend remarked on how he'd had the top medical care and had taken almost 10,000 pills in the eight years between the doctor's diagnosis and its reversal. Yet that time was still filled with such mental and physical lows that he frequently felt suicidal.

As I thank Gazin for his time I am astounded at this great man's ability to impact the 2012 US elections; unlike the UK, US election candidates' religious beliefs are a deal breaker for many voters. Even with the freshly reported significant rise in the number of openly declared US atheists, this remains a burning issue on the US political agenda.

Teleportation is generally understood as an immediate transfer of matter from one point in our universe to another. This method to travel through space is a speculative theory, only plausible in case of the existence of natural wormholes, i.e. flaws in the regular weave of space-time, connecting points in space that are remote from each other.

Isn't it strange that the people we currently despise so much live the life of affluence that we all want for our children? They embody the character traits we wish to instil in our own flesh and blood, and they are the very same 'winners' that we all wish our children to be.

All evidence suggests that neutrinos have mass, but of such a small amount that it is assumed to be negligible. As they travel so fast, their mass must necessarily be tiny - this leads on to the physics controversy of 2011: the saga of the faster-than-light neutrinos.